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SNL plummer block housings solve the housing problems

SNL plummer block housings solve the housing problems

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1 Product information 2 Recommendations 3 Product data<br />

www.bergab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 223-3071<br />

Page ............. 3 Page ............. 10 Load carrying ability<br />

Load carrying ability<br />

Table<br />

1<br />

<strong>SNL</strong> <strong>plummer</strong> <strong>block</strong> <strong><strong>housing</strong>s</strong> are<br />

intended for loads acting vertically<br />

towards <strong>the</strong> base plate (support). If<br />

loads acting in o<strong>the</strong>r directions occur,<br />

checks should be made to ensure<br />

that <strong>the</strong> magnitude of <strong>the</strong> load is<br />

permissible for <strong>the</strong> <strong>housing</strong>, <strong>the</strong> bolts<br />

joining <strong>the</strong> <strong>housing</strong> cap and base,<br />

and for <strong>the</strong> attachment bolts.<br />

Load carrying ability of <strong>the</strong> <strong>housing</strong><br />

Guideline values for <strong>the</strong> breaking<br />

load P of <strong>the</strong> <strong>housing</strong> for various load<br />

directions are given in table 1 . Using<br />

<strong>the</strong>se values and a safety factor selected<br />

with respect to <strong>the</strong> operating<br />

conditions, <strong>the</strong> permissible load for<br />

<strong>the</strong> <strong>housing</strong> can be calculated. In<br />

general engineering a safety factor<br />

of 6 is often used. For special purposes<br />

where extra strength and resistance to<br />

shock loads are required, SKF supplies<br />

as standard a range of dimensionally<br />

equivalent spheroidal graphite<br />

cast iron <strong><strong>housing</strong>s</strong>. For <strong><strong>housing</strong>s</strong> made<br />

of spheroidal graphite cast iron <strong>the</strong><br />

values for P obtained from table 1<br />

should be multiplied by 1,8.<br />

It is important for <strong>the</strong> load carrying<br />

ability of <strong>the</strong> <strong>housing</strong> that <strong>the</strong> bolts<br />

joining cap and base are properly<br />

tightened in accordance with <strong>the</strong> values<br />

given in table 2 on page 48. The<br />

axial load carrying capacity of <strong>the</strong><br />

<strong>housing</strong> is approximately 65 % of<br />

P 180° . For load angles between 55 and<br />

120° as well as for axial loads, or if <strong>the</strong><br />

load acting parallel to <strong>the</strong> base plate<br />

(support surface) exceeds 5 % of P 180° ,<br />

<strong>the</strong> <strong>housing</strong> should be pinned to <strong>the</strong><br />

support or a stop should be provided<br />

in <strong>the</strong> direction of <strong>the</strong> load.<br />

Breaking loads for <strong>SNL</strong> <strong>plummer</strong> <strong>block</strong><br />

<strong><strong>housing</strong>s</strong><br />

P 55° P90° P 120°<br />

P 150° P 180° Pa<br />

Housing<br />

Breaking loads for <strong>SNL</strong> <strong>housing</strong><br />

Size P 55° P 90° P 120° P 150° P 180° P a<br />

– kN<br />

<strong>SNL</strong> 205 155 95 70 60 80 52<br />

<strong>SNL</strong> 206-305 170 100 80 65 85 55<br />

<strong>SNL</strong> 207 190 115 85 80 95 60<br />

<strong>SNL</strong> 208-307 215 130 95 85 110 70<br />

<strong>SNL</strong> 209 230 140 100 90 115 75<br />

<strong>SNL</strong> 210 265 155 120 110 130 85<br />

<strong>SNL</strong> 211 275 170 125 115 140 90<br />

<strong>SNL</strong> 212 300 180 130 120 150 100<br />

<strong>SNL</strong> 213 340 205 150 130 170 110<br />

<strong>SNL</strong> 215 410 250 185 160 205 135<br />

<strong>SNL</strong> 216 430 260 190 175 215 140<br />

<strong>SNL</strong> 217 480 290 205 190 240 155<br />

<strong>SNL</strong> 218 550 340 250 215 275 180<br />

<strong>SNL</strong> 505 155 95 70 60 80 52<br />

<strong>SNL</strong> 506-605 170 100 80 65 85 55<br />

<strong>SNL</strong> 507-606 190 115 85 80 95 60<br />

<strong>SNL</strong> 508-607 215 130 95 85 110 70<br />

<strong>SNL</strong> 509 230 140 100 90 115 75<br />

<strong>SNL</strong> 510-608 265 155 120 110 130 85<br />

<strong>SNL</strong> 511-609 275 170 125 115 140 90<br />

<strong>SNL</strong> 512-610 300 180 130 120 150 100<br />

<strong>SNL</strong> 513-611 340 205 150 130 170 110<br />

<strong>SNL</strong> 515-612 410 250 185 160 205 135<br />

<strong>SNL</strong> 516-613 430 260 190 175 215 140<br />

<strong>SNL</strong> 517 480 290 205 190 240 155<br />

<strong>SNL</strong> 518-615 550 340 250 215 275 180<br />

<strong>SNL</strong> 519-616 580 350 260 230 290 190<br />

<strong>SNL</strong> 520-617 620 370 280 250 310 200<br />

<strong>SNL</strong> 522-619 680 410 310 275 340 220<br />

<strong>SNL</strong> 524-620 790 470 350 320 400 260<br />

<strong>SNL</strong> 526 900 540 410 360 450 295<br />

<strong>SNL</strong> 528 1 050 630 470 430 530 345<br />

<strong>SNL</strong> 530 1 200 730 540 480 600 390<br />

<strong>SNL</strong> 532 1 450 860 640 570 720 470<br />

3<br />

www.bergab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 223-3071<br />

47

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